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  2. Weird sounds and smells in your home you should never ignore

    www.aol.com/weird-sounds-smells-home-never...

    The worst-case scenario is if the smell is coming from an electrical outlet or a switch. If this happens, hit the breaker to stop the flow of electricity to it.

  3. Sewer gas - Wikipedia

    en.wikipedia.org/wiki/Sewer_gas

    The result is the most common means of sewer gas entering buildings and can be solved easily by using the fixtures regularly or adding water to their drains. One of the most common traps to dry out are floor drains such as those typically placed near home furnaces, water heaters and rooms with underfloor heating. Infrequently used utility sinks ...

  4. 'Unusual' smell prompts school closure

    www.aol.com/unusual-smell-prompts-school-closure...

    Contractors later discovered a seized motor on one of the school's convector heaters causing a burning smell to permeate the building. The school said there had been no risk of fire as the heater ...

  5. Forced-air gas - Wikipedia

    en.wikipedia.org/wiki/Forced-air_gas

    Each room has an outlet from the duct system, often mounted in the floor or low on the wall – some rooms will also have an opening into the cold air return duct. Depending on the age of the system, forced-air gas furnaces use either a pilot light or a solid-state ignition system (spark or hot surface ignition) to light the natural gas burner. [3]

  6. Register (air and heating) - Wikipedia

    en.wikipedia.org/wiki/Register_(air_and_heating)

    Floor registers generally have a grille strong enough for a human being to walk on without damaging the grille. It is rare to find a floor register installed less than 6 inches (15 cm) from the corner of a room. [8] When a floor register is not practical or desired, a wall register is used. The correct placement of wall heating registers is ...

  7. Smell smoke in the air in Raleigh today? Here’s where it’s ...

    www.aol.com/smell-smoke-air-raleigh-today...

    North and Northwest Raleigh residents may be noticing the smell of smoke in the air today. This is because a prescribed (or controlled) burn is taking place today at Umstead State Park, said NC ...

  8. Stack effect - Wikipedia

    en.wikipedia.org/wiki/Stack_effect

    For multi-floor, high-rise buildings, h is the distance from the openings at the neutral pressure level (NPL) of the building to either the topmost openings or the lowest openings. Reference [ 10 ] explains how the NPL affects the stack effect in high-rise buildings.

  9. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    These furnaces were still big and bulky compared to modern furnaces, and had heavy-steel exteriors with bolt-on removable panels. Energy efficiency would range anywhere from just over 50% to upward of 65% AFUE. This style furnace still used large, masonry or brick chimneys for flues and was eventually designed to accommodate air-conditioning ...